Wednesday, October 26, 2011

Week 1

On Thursday, October 20th, I made my way to observe my aquarium to observe my aquarium for the first time since we set them up.  The first thing I discovered about my aquarium this week was that a good 1/3 of the water had evaporated out of it.  My first thought was about my poor organisms that live in there; I was afraid that alot of them died because of the loss of water but i was pleasently surprised when I found out this wasn't the case. 

This week, we were supposed to focus specifically on the diversity of our aquariums.  Eventhough there are many organisms living in my aquarium, sadly there is not much diversity among them.  The most abundant species in my aquarium are rotifers.  Just in this one observvation session I found 7 of them.  I found them at many differnt locations in the tank but more specifically around plant A feeding.  When I was observing the surface of the soil in my tank, I found two triangular shaped organisms that looked like mini tornados.  I found out that these orgaisms were called vorticella and they looked like tornados because of their cilia.  I also saw one cyclopse in the aquarium.

As for the dragonfly larva carcus, it is still there.  There are not many organisms feeding on it anymore.  There may also be a second dead dragonfly larva in the aquarium.

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